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N0. 6|3,485. Patented NOV. l, I893.

Y L. BAKER.

FEED WATER HEATER AND PURIFIEB.

(Application filed June 10, 1897.) i N o M o d e I 2 Sheets-Sheet l.

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No. 6l3,485.

L. BAKER. FEED WATER HEATER AND-EURIFIER.

. Patented Nov. I898.

, Application filed June 10, 1897.)

2 Sheets-Sheet 2.

(No Model.)

UNITED STATES PATENT OFFICE.

LUDWIG BAKER, OF SAGINAW, MICHIGAN, ASSIGNOR TO THE WIOKES BROTHERS, OF SAME PLACE.

FEED-WATER HEATER AND PURIFIER.

SPECIFICATION forming part of Letters Patent No. 613,485, dated November 1, 1898. Application filed. June 10, 1897. $eria1 No. 640,145. (No model.)

T0 at whom it may concern:

Be it known that I, LUDWIG BAKER, of Saginaw, Michigan, have invented certain new and useful Improvements in Feed-Water Heaters and Purifiers, of which the following is a specification.

This invention relates to that class of feedwater heaters and purifiers in which the feedwater is deprived of its incrusting material by being passed in thin sheets over extended surfaces While at an elevated temperature, and more particularly to that class of feed-' water heaters wherein the feed-water is permitted to pass from one vessel to another and in which the incrusting material is deposited on the metallic surface over which the water flows. Y

My invention is shown in the accompanying drawings, in which Figure 1 is a sectional elevation; Fig. 2, an enlarged sectional detail of the upper portion of the feed-water heater, and Fig. 3 a sectional plan view.

In the drawings let A represent a cylindrical casing having a removable head B. Said shell is pierced by the water-inlet pipe 0, controlled by a valve at c, and said valve is automatically operated, by means of the float D, through the connecting-rod cl. Located within the shell are a series of basins E, each of which has its bottom dished or struck up to form a conical open neck 6, which rises above the rim or edge of the basin. The series of basins are arranged one above the other and are supported in any convenient manner within the shell or casing. The inlet-pipe O is arranged to discharge into the uppermost of the basins, and the feed-water will first fill the upper basin and as it overflows will escape over the rim or edge of the basin and running down the inclined bottom thereof will drop over into the basin below at the angle of said bottom. The feed water is heated to the proper temperature by means of steam, either live' or exhaust, which is admitted through the inlet F and passed up through a chamber containing a series of plates G, whereby the oil or grease is extracted. The steam issuing from the oil-separator fills the chamber above the upper basin and passes down through the conical necks G and around the edges of the basins in the same direction as the feed-water, finally escaping at the outlet H. The water and steam are thus passed in the same direc-- tion, and owing to this fact and to the buoyancy of the steam a more efficient heating of the feed-water is secured. The incrustive matter is deposited in stalactite form upon the bottoms of the basins and maybe passed through filtering material, if desired. The feed-water is drawn off through the outletpipe I, while the pipe c' represents the over- The construction shown in Fig. 2 is slightly modified in this, that the inlet-pipe C is projected into the axis of theheaterspace and the water is discharged into a pan J ,supported in the upper basin. This pan serves as a distributer and holds a small body of water which is subjected to the action of the hot steam, thus securing a preliminary heating before being delivered into the basins.

I am aware that it is not new to provide a feed-water heater and purifier with a series 'of bowls or basins through which the water is successively passed and that such feedwater heaters have been used with both live and exhaust steam; but so far as I am aware the form of basin which I have shown and de= scribed is new and secures improved results. The increased efficiency of my feed water heater is mainly due to the fact that by reason of the peculiar form and construction of the basin the water is retained therein until thoroughly heated. Then the water escapes over the. rim or edge of the basin and flows inwardly along its curved bottom, thus being spread out into a thin sheet and passing over an extended metallic surface. Furthermore, by reason of the peculiar form of the basins the steam passes down through the openings at the centers of the basins and also around their edges, thus equally subjecting all por tions of the exposed metallic surface to its heating effect. The formation of the lower surface of the basin upon a curved line de= termines the point at which the water will be caused to drip from the lower surface of one basin into the one immediately beneath it, and thus permits the deposit in stalactite form over an extended surface. This in Too crustive material can be removed, of course; but it is important to have such a construction as will not necessitate the frequent removal of the basins.

If desired, a suitable filter may be employed, as shown at K, and the cylinder provided with a manhole at L to give access to the filter. A similar manhole may be employed at M to remove any sediment which may pass to basins, and a blow-oh; is shown at N. An airrelief pipe 0 may be added at the top of the heater for the purpose of preventing the formation of a vacuum in the heater.

While some of the parts herein described are constructive merely and may be omitted and other constructive features added,

\Vhat I claim as new, and desire to secure by Letters Patent, is

1. In a feed-water heater, a shallow basin having its lower surface downwardly curved from the rim toward the center and provided with a central tubular neck formed integrally with the bottom wall and extending upwardly, axially of the basin, and terminating above the plane of its rim, whereby there is provided an annular water-chamber and a central steam-passage, and the feedwater is caused to escape from the chamber by overflowing its rim, substantially as described.

2. In a feed-water heater, the combination, with an outer casing, of a vertically-arranged series of basins supported out of contact with the wall of the casing and each having its lower surface downwardly curved from the rim toward the center and provided with a central tubular neck formed integrally with the bottom wall and extending upwardly, axially of the basin, and terminating above the plane of its rim, whereby there is provided a series of annular water-chambers and a continuous central steam-passage, and the feed-water is caused to pass from one basin to the next throughout the series by overflowing the rims thereof, substantially as described.

3. In a feed-water heater, the combination, with an outer casing, of a vertically-arranged series of basins supported out of contact with the walls of the casing and each having its lower surface downwardly curved from the rim toward the center and provided with a central tubular neck formed integrally with the bottom wall and extending upwardly, axially of the basin, and terminating above the plane of its rim, the several basins being of substantially the same width and the necks thereof arranged in line, whereby there is provided a series of annular water-chambers and a continuous central steam-passage, a water inlet above the uppermost of said basins and a water-outlet at the bottom of the casing, substantially as described.

LUDWIG BAKER.

lVitnesses:

FRANK II. PAYNE, E. .T. CLARK. 

